136664889 has 16 divisors (see below), whose sum is σ = 184518720. Its totient is φ = 89968320.

The previous prime is 136664863. The next prime is 136664903. The reversal of 136664889 is 988466631.

It is not a de Polignac number, because 136664889 - 2¹⁹ = 136140601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136664789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83499 + ... + 85119.

It is an arithmetic number, because the mean of its divisors is an integer number (11532420).

Almost surely, 2^136664889 is an apocalyptic number.

It is an amenable number.

136664889 is a deficient number, since it is larger than the sum of its proper divisors (47853831).

136664889 is a wasteful number, since it uses less digits than its factorization.

136664889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960.

The product of its digits is 1492992, while the sum is 51.

The square root of 136664889 is about 11690.3759135453. The cubic root of 136664889 is about 515.0930035950.

The spelling of 136664889 in words is "one hundred thirty-six million, six hundred sixty-four thousand, eight hundred eighty-nine".